1, Hua: The famous mathematician Hua Yu 1946 was invited to give lectures in the United States, which was highly valued by the academic community. At that time, the University of Illinois signed a lifelong faculty contract with him, with an annual salary of 1 10,000 dollars. Life in China suddenly became comfortable. He not only has a small building, but also has four assistants and a typist specially assigned to him by the university.

1950 In February, Hua resolutely gave up the treatment of Professor Guo in the United States, broke through the blockade and returned to the motherland. When passing through Hong Kong, he wrote an open letter to students studying in the United States, expressing his enthusiasm for dedicating himself to the motherland.

2. Li Siguang: Li Siguang, a famous geologist, studied hard at Birmingham University in England for six years in his early years and obtained a master's degree in geology. His teacher, Professor Baldwin, advised him to continue his studies and return to China after obtaining his doctorate.

Li Siguang declined the teacher's kindness. He replied, "No, I want to contribute what I have learned to my motherland as soon as possible." 1920 resumed work until 1937 when War of Resistance against Japanese Aggression broke out.

3. Deng Jiaxian: Deng Jiaxian, the father of China's "two bombs", will be given good conditions and generous treatment by the United States after receiving his doctorate, hoping that he can work in the United States for a long time. However, Deng Jiaxian did not waver in his determination to return to work because of his high official position and generous salary.

1950, he returned to the motherland with the ambition of serving the country and made outstanding contributions to the successful development of the "two bombs".

4. Zhou Peiyuan: Zhou Peiyuan, a famous contemporary physicist in China, was invited to participate in the research work of the American Wartime Science Research and Development Agency 1945. With the end of World War II, the U.S. Admiralty established a naval military industrial test station, hoping that Zhou Peiyuan would work in the station with good treatment.

1947 February, Zhou Peiyuan resolutely left the United States with his wife and children and returned to the embrace of the motherland.

5. Qian Sanqiang: Qian Sanqiang, the founder of atomic energy science in China, went to France to study atomic theory in 1937, and was regarded as the best scientific researcher by the curies.

1948, Qian Sanqiang and his wife He proposed to return to China, but their tutors and colleagues repeatedly persuaded them to stay. ?